A system comprises an encoder configured to compress attribute information and/or spatial information for a point cloud and/or a decoder configured to decompress compressed attribute and/or spatial information for the point cloud. To compress the attribute and/or spatial information, the encoder is configured to convert a point cloud into an image based representation. Also, the decoder is configured to generate a decompressed point cloud based on an image based representation of a point cloud. In some embodiments, a bit stream structure may be used to communicate compressed point cloud data. The bit stream structure may include point cloud compression network abstraction layer (PCCNAL) units that enable use of groups of frames (GOFs), frame, and sub-frame signaling of patch information. Such a bit stream structure may permit low delay streaming and random access reconstruction of point clouds amongst other applications.
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5. The non-transitory computer readable medium of claim 4, wherein the video encoded image frames comprising the geometry patch image, the attribute patch image, and the occupancy image for the respective ones of the patches are interleaved in the bit stream.
6. The non-transitory computer readable medium of claim 4, wherein the video encoded image frames comprising the geometry patch image, the attribute patch image, and the occupancy image for the respective ones of the patches are respectively grouped together in the bit stream as a group of geometry image frames, a group of attribute image frames, and a group of occupancy image frames.
8. The non-transitory computer-readable medium of claim 7, wherein the relationship indicated by the coding unit is that the patch image in the first image frame and the other patch image in the other image frame comprise an attribute patch image and a geometry patch image for a same patch.
13. The non-transitory computer-readable medium of claim 1, wherein the one or more coding units are formatted as network abstraction layer (NAL) units in the bit stream.
19. The device of claim 14, wherein the one or more coding units are formatted as network abstraction layer (NAL) units in the bit stream.
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May 12, 2021
May 9, 2023
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